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CVE-2026-74427

Linux

In the Linux kernel, the following vulnerability has been resolved: afs: Fix netns teardown to cancel the preallocation charger Fix the teardown of an afs network namespace to make sure it cancels the work item that keeps the preallocated rxrpc call/conn/peer queue charged before incoming calls are disabled (i.e. listen 0). Also, if net->live is false because the afs netns is being deleted, make afs_charge_preallocation() skip charging and make afs_rx_new_call() avoid requeuing the charger. (This was found by AI review).

CVSS
9.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.15
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 9.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: afs: Fix netns teardown to cancel the preallocation charger Fix the teardown of an afs network namespace to make sure it cancels the work item that keeps the preallocated rxrpc call/conn/peer queue charged before incoming calls are disabled (i.e. listen 0). Also, if net->live is false because the afs netns is being deleted, make afs_charge_preallocation() skip charging and make afs_rx_new_call() avoid requeuing the charger. (This was found by AI review).

Affected product and versions

Product
Linux
Affected versions
>= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9, >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1, >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 59e8b7652f6cbfb62d377ead0ad553c1b4e39a7a, >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 85d5fb80fe4f0cc836b6df83f26de204fe102ff7, >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < a33975ff2b6ea47b8f29956403374b1cdd057539, >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < b83ecf80e28afb7b6595ba79932e77ca68a5a83d, >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < eec89c5f8e1adc1de4824042ef75f62aed804153, >= 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 < 47694fbc9d24ab6bf210f91e8efe06a10a478064, >= 4.9
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available